jsx is an event based json parser. basically [yajl][1], but in erlang. born from a need for a stream based, incremental parser capable of outputting a number of representations.
jsx provides an iterator based api that returns tuples of the form `{event, Event, Next}` where `Event` is an atom or tuple (see below) representing the json structure or value encountered. `Next` is a zero arity function that returns the next tuple in the sequence when called. it is stream based, and can also return the tuple `{incomplete, More}` to signify that input is exhausted. `More` is an arity one function that, when called with another binary, attempts to continue parsing treating the new binary as the tail of the preceding binary. errors in the json document are represented by the tuple `{error, {badjson, Bin}}`
jsx is stream based and allows the parsing of naked, unwrapped json values. together, this presents a problem with streams that contain numbers ie: "123". returning at end of input means clients need to be able to invalidate the `{integer, ...}` and `end_json` events and replace them in case of more input of the form "456", for example. instead, jsx doesn't return those events until an unambiguous end of value or input is reached. instead, `{incomplete, More}` will be returned. parsing can be explicitly terminated with `More(end_stream)` or by ending all naked numbers with whitespace. note that this is only a problem with json numbers not wrapped in a containing object or array and that calling `More(end_stream)` in any other context will result in an error
